battery charging

in order to charge a battery there must be a potential difference between the charger and the battery,i.e.a charging voltage.As a battery is being charged this potential difference reduces and since the charging current is related to this charging voltage the rate of charging also reduces.
A battery is put on charge.The relationship between the charging current,i amperes,and the time,t hours passed,is given by this formula, i=3e to the power of -0.36t (cannot type in proper inequality symbols)  
                                

Q1,construct a table showing the current for values of time between 0 and 9 hours at intervals of 1 hour.Hence draw a graph of i against t for 0 is smaller or equal to t is smaller or equal 9.(cannot type in proper inequality symbols)